HTTP Error 404.11 - Not Found

The request filtering module is configured to deny a request that contains a double escape sequence.

Most likely causes:

  • The request contained a double escape sequence and request filtering is configured on the Web server to deny double escape sequences.

Things you can try:

  • Verify the configuration/system.webServer/security/requestFiltering@allowDoubleEscaping setting in the applicationhost.config or web.confg file.

Detailed Error Information:

Module   RequestFilteringModule
Notification   BeginRequest
Handler   ApiURIs-ISAPI-Integrated-4.0
Error Code   0x00000000
Requested URL   http://feature.u-car.com.tw:80/article/35148/%E6%B1%BD%E8%BB%8A%E4%BF%9D%E9%9A%AA%E5%A4%A7%E8%A7%80%E5%9C%92(%E5%85%AD)%E2%94%80%E6%96%B0%E8%BB%8A%E4%BF%9D%E5%96%AE%E8%A9%95%E6%AF%94%E6%8F%AD%E5%AF%86
Physical Path   F:\Webs\U-CAR\u-car.com.tw\article\35148\%E6%B1%BD%E8%BB%8A%E4%BF%9D%E9%9A%AA%E5%A4%A7%E8%A7%80%E5%9C%92(%E5%85%AD)%E2%94%80%E6%96%B0%E8%BB%8A%E4%BF%9D%E5%96%AE%E8%A9%95%E6%AF%94%E6%8F%AD%E5%AF%86
Logon Method   Not yet determined
Logon User   Not yet determined

More Information:

This is a security feature. Do not change this feature unless the scope of the change is fully understood. You should take a network trace before changing this value to confirm that the request is not malicious. If double escape sequences are allowed by the server, modify the configuration/system.webServer/security/requestFiltering@allowDoubleEscaping setting. This could be caused by a malformed URL sent to the server by a malicious user.

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